Some surgeons like to put steroids into the lumen of a saline filled implant or in the pocket created at the time of surgery. They feel that because steroids affect inflammation they can reduce the chances of contraction of the capsule which always forms around the implant. In this way they hope to keep the breast soft and natural feeling.
The disadvantage is that steroids can interfere with healing. This may lead to early droopiness or in severe cases extrusion of the implant.
The steroid disappears form the body within a few months. Surgeons who use steroids believe that if the contracture has been prevented during this time it is unlikely that contraction will occur later.